Apparently people are noticing very steep drop-offs in observed range based on temperature, eg. a Mazda CX-90 (26 mile rated range, and gets it pretty consistently at 70F) can only go around 12 miles at 40F.
https://old.reddit.com/r/MazdaCX90/comments/18ib2cz/battery_...
A big component of it is heater use. In an ICE vehicle, you heat the car with waste heat that is going to be lost anyway. In an EV, you heat the car with energy from the battery. Heating takes up way more energy than most people realize.